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(No Model.)

F. W. GORDON.

BLAST FURNACE.

No. 388,275. Patented Aug. 21, 188T-- WITNESSES, 11-14,! W-jM-NVEJV'TOR,

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ilni'rnn STATES Aren't FFEQEG FRED. W. GORDON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GORDON, STROBEL & LAUEEAU, (LIMITED,) OF SAME PLACE.

BLAST-FURNACE.

EBPECIPICATION forming part of Letters Patent No, 388,275, dated August 21, 1888. Application filed September 27, 1887. Serial No. 250,865. (No model.)

To all whom it may concern.-

Be it known that I, FRED. W. GORDON, of Philadelphia, Philadelphia county, Pennsylvania, have invented certain new and useful Improvements in Blast-Furnaces, of which the following is a specification.

My invention relates to the construction of the supporting parts of blast-in rnaces, and will be readily understood from the following de scription, taken in connection with the accompanying drawings, in which- Figure l is an elevation, half vertical diametrical section, of the lower portion of a blastfurnace embodying my present improvements; Fig. 2, a horizontal section of the same upon a smaller scale, half of the section being upon a plane corresponding with the level of the mantel, the other half being upon planes somewhat above that level, the level of a part of the left-hand section being lowered to expose one of the brackets O; and Fig. 3, a vertical diametrical section through a portion of the shell at the mantel, the radial planes of this section lying midway between two of the mantelbrackets.

In the drawings, Aindicates the shell of the furnace-stack; B, the wall of the furnace-stack; O, the bosh-shell; D, the boslrwall; E, the upper portion of the bosh-shell, that portion just below the mantel-shoulder; F, the mantelshoulder around the boslrshell at the foot of the stack-wall; G, a circumferential series of radial brackets disposed just below the mantel and riveted to the mantel and to the upper portion of the bosh-shell; H, beams reaching from bracket to bracket and lying directly under the mantel, these beams having their ends secured to the bracket, as by bolts, the beams being straight and forming chords subtcnding arcs struck from the furnace center from bracket to bracket; J, a similar series of beams secured to the brackets at the fronts of their bases; K, a circular series of columns with their feet resting upon a sole-plate upon the foundation of the furnace and with their upper ends engaging and supporting the lower ends of the brackets, there being a column for each bracket; L, the circle-pipe disposed exterior-1y to the circle of columns; M, suspender-lugs formed upon the outer edges of the brackets and projecting outwardly therefrom and having the form of vertically-cored bosses, whose axes, if extended downward, would intersect the sectional axis of the circle-pipe; N, suspender-rods having their lower ends attached to the circle-pipe and passing thence upwardly through the suspenderdugs above them, which are to be provided with nuts or analogous devices to cause the lugs to sustain the rods; and O brackets disposed within the furnace-shell A just above the niantelplates, as clearly shown in Fig. 3, and rigidly secured to said shell and plates, these brackets being disposed in circular series, one bracket intermcdiately over each pair of outer brackets, G.

The contiguous shells of stack and bosh and the mantel form virtually an annular plategirder. The bracketsG endow the lower member of this girder with transverse stability, and the brackets 0 do the same for the upper me1nher, and the brackets G furnish also means for connecting the columns with the girder for the support of the load.

The bosh and hearth walls can be as readily inspected and repaired, &c., as in the ordinary mantel-column construction, while the vertical load upon the columns is properly distributed by the beam-and-bracket system at the top of the columns. The lower series of beams J serve in maintaiiling the brackets G in proper radial position. The lugs M upon the brackets G, in connection with the suspender-rods N, serve in suspending the circle-pipe in a free manner, so as to be selt compensating for the expansion and contraction of its connections.

As many columns and brackets as desired may be employed, either an even number or an odd number. The beams H are placed under the mantel as close in against the boshshell as expedient, and their ends, in some cases, as in the illustration, will come exterior to and be bolted or otherwise secured against the outer edges of the tops of the brackets G. \Vith an increased number of columns and brackets in the circle, the angle subtended by the beams H may be such that the ends of the beam may come within the outer edges of the bracket, in which case I have in practice secured the ends of the beams in notches or seats in the tops of the brackets.

At mid-points of the length of the beams H the beams of course lie under the inner edges of the mantel-plates, and at these points I preferably provide the internal brackets, O, riveted to the mantel-plates and to the furnaceshell, these brackets serving to give transverse stiffness to the mantel angle at these points and to cause the load to be more properly imposed upon the beams. The brick-work of the wall over the mantel is built about these brackets O.

The office of the columns and brackets is to support the load above the mantel level, and the office of the beams H is to distribute that load upon the brackets. These beams form mantel-lintels, and if mantel-arches springing from column to column be employed the mantel-beams may of course be omitted.

I claim as my invention- 1. In a blast-furnace, the combination, substantially as set forth, of a bosh-shell, a stackshell of greater diameter than the bosh-shell, a horizontal mantel joining the top of the boshshell and the bottom of the stack-shell, brackets G, engaging the mantel and bosh-shell, and columns K, isolated from the bosh-shell and with their upper ends engaging said brackets directly below the mantel.

2. In a blast-furnace, the combination, substantially as set forth, of a bosh-shell, a stackshell of greater diameter than the bosh-shell,

a horizontal mantel joining the top of the boshshell and the bottom of the stack-shell, brackets G, engaging the mantel and bosh-shell, brackets O, engaging the mantel and stackshell and disposed intermediately over and between the brackets G, and columns K, isolated from the bosh-shell and with their upper ends engaging the brackets G directly below the mantel.

3. In a blast-furnace, the combination, substantiallyas set forth, of a bosh-shell, a stackshell of greater diameter than the bosh-sheli, a horizontal mantel joining the top of the boshshell and the bottom of the stack-shell, brackets G, engaging the mantel and bosh-sliell, straight beams H, engaging under the mantel tangent to the bosh-shell and connected at their ends to said brackets, and columns K, isolated from the bosh-shell and with their upper ends engaging the brackets directly below the mantel.

4. In a blast-furnace, the combination, substantially as set forth, of a bosh-shell, a stackshell of greater diameter than the bosh-shell, a horizontal mantel joining the top of the boshshell and the bottom of the stack-shell, brackets G, engaging the mantel and bush-shell,-

straight beams H, engaging under the mantel tangent to the bosh-shell and connected at their ends to said brackets, columns K, isolated from the bosh-shell and with their upper ends engaging the brackets directly below the mantel, and beams J, extending from bracket to bracket and secured thereto at the front bases of said brackets.

FRED. W. GORDON.

Witnesses:

J NO. TAYLOR, PERSIFOR F. GIBSON. 

